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Compares measured reactive current to a proportion of active current for control.
Compares measured reactive current to a reference level for control.
Prevents generator overload by limiting exported/imported current.
Prevents generator instability at leading power factor by limiting excitation.
Adjusts AVR set-point to match generator and bus voltages before breaker closure.
Two control modes for PFC3 operation: dynamic and dead-band.
General considerations for PFC3 installation, environment, and wiring.
Importance of adequate protection for engine and generator systems.
Simplest configuration with one or more generators coupled to the mains bus.
Connection of generator output terminals for power supply and sensing.
Connection to generator current sensing C/T with correct phase and polarity.
Direct connection to AVR terminals for control signal transfer.
Terminal closure switches PFC3 into power factor/VAr control.
Details on expanding basic use with optional features.
Connecting a potentiometer for remote adjustment of power factor or VAr.
Connecting a switch for remote selection of power factor or VAr operating modes.
Limiting maximum generator current using a current transformer.
Limiting minimum excitation voltage to prevent generator pole slipping.
Using the built-in voltage matching facility with a 110-120Vac supply.
Using PFC3 to correct the power factor of the incoming mains supply.
Outlines different installation configurations and corresponding sections.
Steps for commissioning the basic system, including preliminary adjustments and C/T checks.
Setting user adjustable controls and selection links before generator startup.
Steps to set the generator droop for optimal paralleling and load sharing.
Commissioning the PFC3 unit itself after setting AVR droop.
Procedures for setting up optional features of the PFC3.
Configuration steps for the voltage matching transformer and PFC3 settings.
Installation and commissioning of the current limiting feature for PF correction.
Setting up the low excitation limiting feature for leading power factor operation.
Configuring dead-band and dynamic control modes for PFC3 operation.
Using PFC3 for power factor correction and the necessity of current limiting.
Explanation of the function of various LEDs on the PFC3 unit.
Details on selection links and switches for configuring PFC3 modes.
General operational notes, automatic function, and setting PF/VAR control.
Recommended PFC3 settings for CHP installations.
Recommended PFC3 settings for peak lopping applications.
Recommended PFC3 settings for power factor correction and current limiting.
Recommended PFC3 settings when using the generator as a synchronous motor.
Action to take if generator terminal voltage exceeds the rated value.
General| Frequency | 50/60 Hz |
|---|---|
| Display | LCD |
| Current Transformer Input | 5A |
| Control Method | Microprocessor based |
| Communication | RS485 Modbus |
| Humidity | 95% RH non-condensing |
| Parallel Operation | Yes |
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